252 can be expressed as a product of primes as:
Clearly, 252 = 2 x 2 x 3 x 3 x 7.
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21, 9, 21, 11, 21, 13, 21, ....... |
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Two trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is |
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If a and b are positive integers and (a-b)/3.5 = 4/7, then |
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If 5 women or 8 girls can do a work in 84 days. In how many days can 10 women and 5 girls can do the same work ? |
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If 9 men working 6 hours a day can do a work in 88 days. Then 6 men working 8 hours a day can do it in how many days? |
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Walking at 3/4 of his usual speed ,a man is late by 2 1/2 hr. the usual time is |
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In a boat 25 persons were sitting. Their average weight increased one kilogram when One man goes and a new man comes in. The weight of the new man is 70kgs. Find the Weight of the man who is going ? |
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A man can row 4.5 km/hr in still water. It takes him twice as long to row upstream as to row downstream. What is the rate of the current ? |
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A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is |
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A man starts walking at 3 pm . he walks at a speed of 4 km/hr on level ground and at a speed of 3 km/hr on uphill , 6 km/hr downhill and then 4 km/hr on level ground to reach home at 9 pm. What is the distance covered on one way? |
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